. >> like his contemporaries, steve jobs and bill gates, mcafee was an inventor, entrepreneur, self-promotor all rolled into one. here he is on the "today" show in 1988. >> computer virus technology is like the wizard's wand. it's the magic of the new technology. >> working out of a corner of this modest house in santa clara, mcafee created the antivirus software that bears his name. >> silicon valley was extremely high energy, a lot of optimism, optimistic and engineers, programmers and entrepreneurs, a lot of cooperation. >> the antivirus software made him rich and famous and in 1993 he sold the company. >> he made $100 million when it was something to make $100 million. >> but mcafee wasn't finished. like greg faull, the man he would later clash with, mcafee threw himself into things, all kinds of things. he pion eared instant messaging technology and dabbled in yoga instruction. established a flight school for ultra light planes and invested heavily in high-end real estate. >> his house is art which in a booming economy you might be able to sell and make some money, but in a recession, c